Table 1 summarises the various substances used in the production plant of the biopharmaceutical manufacturer ChemBioEnv Inc. The corresponding auto ignition temperature for each substance is also listed in Table 1.
Table 1 table 2
Substabce Auto ignition Temperature
temperatue Class
Acetic acid 485⁰C T1 450⁰C
acetone 535⁰C T2 300⁰C
Benzene 560⁰C T3 200⁰C
Diethylether 170⁰C T4 135⁰C
Ethanol 425⁰C T5 100⁰C
T6 85⁰C
ChemBioEnv Inc. has decided to buy a new pump for use in its production plant. The pump being considered has the following ATEX marking displayed on it:
CE [ε x ⟩ II 2 G Ex d IIC T1
Basing your assessment on the ATEX Temperature Class data provided in Table 2,
(a) which substances would this pump not be compatible with?
(b) what temperature class would be suitable for all substances used in the production plant?